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Having 2 versions of gcc

rated 0 times [ 0] [ 0] / answers: 1 / hits: 6066 / 2 Years ago, wed, october 6, 2021, 7:52:08

I have just installed gcc 4.7 from ppa repository. Ubuntu 12.04 already comes with 4.6. When I use command:

gcc --version

It tells me it is 4.6.3 to be exact.

I have no idea of how to launch the 4.7 compiler. In fact, I wouldn't mind erasing the former version and stay with 4.7 only (I guess that wouldn't be a problem).

How can I fix this?

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arbaour

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6 Months ago

answered 2 Years ago tisglitter · Accepted Answer

Use update-alternatives (from CLI) or galternatives (from GUI) to set the default for gcc.

If you don't have them, install with: sudo apt-get install galternatives.

I would use the GUI version, it is more simple for a beginner.

From CLI:

sudo update-alternatives --install /usr/bin/gcc gcc /path/to/newer/gcc 40 sudo update-alternatives --install /usr/bin/gcc gcc /path/to/older/gcc 30 sudo update-alternatives --config gcc